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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /sound/soc/amd/renoir/rn-pci-acp3x.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/amd/renoir/rn-pci-acp3x.c')
-rw-r--r--sound/soc/amd/renoir/rn-pci-acp3x.c434
1 files changed, 434 insertions, 0 deletions
diff --git a/sound/soc/amd/renoir/rn-pci-acp3x.c b/sound/soc/amd/renoir/rn-pci-acp3x.c
new file mode 100644
index 000000000..b3812b70f
--- /dev/null
+++ b/sound/soc/amd/renoir/rn-pci-acp3x.c
@@ -0,0 +1,434 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// AMD Renoir ACP PCI Driver
+//
+//Copyright 2020 Advanced Micro Devices, Inc.
+
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+
+#include "rn_acp3x.h"
+
+static int acp_power_gating;
+module_param(acp_power_gating, int, 0644);
+MODULE_PARM_DESC(acp_power_gating, "Enable acp power gating");
+
+/*
+ * dmic_acpi_check = -1 - Use ACPI/DMI method to detect the DMIC hardware presence at runtime
+ * = 0 - Skip the DMIC device creation and return probe failure
+ * = 1 - Force DMIC support
+ */
+static int dmic_acpi_check = ACP_DMIC_AUTO;
+module_param(dmic_acpi_check, bint, 0644);
+MODULE_PARM_DESC(dmic_acpi_check, "Digital microphone presence (-1=auto, 0=none, 1=force)");
+
+struct acp_dev_data {
+ void __iomem *acp_base;
+ struct resource *res;
+ struct platform_device *pdev[ACP_DEVS];
+};
+
+static int rn_acp_power_on(void __iomem *acp_base)
+{
+ u32 val;
+ int timeout;
+
+ val = rn_readl(acp_base + ACP_PGFSM_STATUS);
+
+ if (val == 0)
+ return val;
+
+ if ((val & ACP_PGFSM_STATUS_MASK) !=
+ ACP_POWER_ON_IN_PROGRESS)
+ rn_writel(ACP_PGFSM_CNTL_POWER_ON_MASK,
+ acp_base + ACP_PGFSM_CONTROL);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rn_readl(acp_base + ACP_PGFSM_STATUS);
+ if (!val)
+ return 0;
+ udelay(1);
+ }
+ return -ETIMEDOUT;
+}
+
+static int rn_acp_power_off(void __iomem *acp_base)
+{
+ u32 val;
+ int timeout;
+
+ rn_writel(ACP_PGFSM_CNTL_POWER_OFF_MASK,
+ acp_base + ACP_PGFSM_CONTROL);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rn_readl(acp_base + ACP_PGFSM_STATUS);
+ if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_OFF)
+ return 0;
+ udelay(1);
+ }
+ return -ETIMEDOUT;
+}
+
+static int rn_acp_reset(void __iomem *acp_base)
+{
+ u32 val;
+ int timeout;
+
+ rn_writel(1, acp_base + ACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rn_readl(acp_base + ACP_SOFT_RESET);
+ if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
+ break;
+ cpu_relax();
+ }
+ rn_writel(0, acp_base + ACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rn_readl(acp_base + ACP_SOFT_RESET);
+ if (!val)
+ return 0;
+ cpu_relax();
+ }
+ return -ETIMEDOUT;
+}
+
+static void rn_acp_enable_interrupts(void __iomem *acp_base)
+{
+ u32 ext_intr_ctrl;
+
+ rn_writel(0x01, acp_base + ACP_EXTERNAL_INTR_ENB);
+ ext_intr_ctrl = rn_readl(acp_base + ACP_EXTERNAL_INTR_CNTL);
+ ext_intr_ctrl |= ACP_ERROR_MASK;
+ rn_writel(ext_intr_ctrl, acp_base + ACP_EXTERNAL_INTR_CNTL);
+}
+
+static void rn_acp_disable_interrupts(void __iomem *acp_base)
+{
+ rn_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +
+ ACP_EXTERNAL_INTR_STAT);
+ rn_writel(0x00, acp_base + ACP_EXTERNAL_INTR_ENB);
+}
+
+static int rn_acp_init(void __iomem *acp_base)
+{
+ int ret;
+
+ /* power on */
+ ret = rn_acp_power_on(acp_base);
+ if (ret) {
+ pr_err("ACP power on failed\n");
+ return ret;
+ }
+ rn_writel(0x01, acp_base + ACP_CONTROL);
+ /* Reset */
+ ret = rn_acp_reset(acp_base);
+ if (ret) {
+ pr_err("ACP reset failed\n");
+ return ret;
+ }
+ rn_writel(0x03, acp_base + ACP_CLKMUX_SEL);
+ rn_acp_enable_interrupts(acp_base);
+ return 0;
+}
+
+static int rn_acp_deinit(void __iomem *acp_base)
+{
+ int ret;
+
+ rn_acp_disable_interrupts(acp_base);
+ /* Reset */
+ ret = rn_acp_reset(acp_base);
+ if (ret) {
+ pr_err("ACP reset failed\n");
+ return ret;
+ }
+ rn_writel(0x00, acp_base + ACP_CLKMUX_SEL);
+ rn_writel(0x00, acp_base + ACP_CONTROL);
+ /* power off */
+ if (acp_power_gating) {
+ ret = rn_acp_power_off(acp_base);
+ if (ret) {
+ pr_err("ACP power off failed\n");
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static const struct dmi_system_id rn_acp_quirk_table[] = {
+ {
+ /* Lenovo IdeaPad S340-14API */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "81NB"),
+ }
+ },
+ {
+ /* Lenovo IdeaPad Flex 5 14ARE05 */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "81X2"),
+ }
+ },
+ {
+ /* Lenovo IdeaPad 5 15ARE05 */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "81YQ"),
+ }
+ },
+ {
+ /* Lenovo ThinkPad E14 Gen 2 */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "20T6CTO1WW"),
+ }
+ },
+ {
+ /* Lenovo ThinkPad X395 */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "20NLCTO1WW"),
+ }
+ },
+ {}
+};
+
+static int snd_rn_acp_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ struct acp_dev_data *adata;
+ struct platform_device_info pdevinfo[ACP_DEVS];
+#if defined(CONFIG_ACPI)
+ acpi_handle handle;
+ acpi_integer dmic_status;
+#endif
+ const struct dmi_system_id *dmi_id;
+ unsigned int irqflags, flag;
+ int ret, index;
+ u32 addr;
+
+ /* Return if acp config flag is defined */
+ flag = snd_amd_acp_find_config(pci);
+ if (flag)
+ return -ENODEV;
+
+ /* Renoir device check */
+ if (pci->revision != 0x01)
+ return -ENODEV;
+
+ if (pci_enable_device(pci)) {
+ dev_err(&pci->dev, "pci_enable_device failed\n");
+ return -ENODEV;
+ }
+
+ ret = pci_request_regions(pci, "AMD ACP3x audio");
+ if (ret < 0) {
+ dev_err(&pci->dev, "pci_request_regions failed\n");
+ goto disable_pci;
+ }
+
+ adata = devm_kzalloc(&pci->dev, sizeof(struct acp_dev_data),
+ GFP_KERNEL);
+ if (!adata) {
+ ret = -ENOMEM;
+ goto release_regions;
+ }
+
+ /* check for msi interrupt support */
+ ret = pci_enable_msi(pci);
+ if (ret)
+ /* msi is not enabled */
+ irqflags = IRQF_SHARED;
+ else
+ /* msi is enabled */
+ irqflags = 0;
+
+ addr = pci_resource_start(pci, 0);
+ adata->acp_base = devm_ioremap(&pci->dev, addr,
+ pci_resource_len(pci, 0));
+ if (!adata->acp_base) {
+ ret = -ENOMEM;
+ goto disable_msi;
+ }
+ pci_set_master(pci);
+ pci_set_drvdata(pci, adata);
+ ret = rn_acp_init(adata->acp_base);
+ if (ret)
+ goto disable_msi;
+
+ if (!dmic_acpi_check) {
+ ret = -ENODEV;
+ goto de_init;
+ } else if (dmic_acpi_check == ACP_DMIC_AUTO) {
+#if defined(CONFIG_ACPI)
+ handle = ACPI_HANDLE(&pci->dev);
+ ret = acpi_evaluate_integer(handle, "_WOV", NULL, &dmic_status);
+ if (ACPI_FAILURE(ret)) {
+ ret = -ENODEV;
+ goto de_init;
+ }
+ if (!dmic_status) {
+ ret = -ENODEV;
+ goto de_init;
+ }
+#endif
+ dmi_id = dmi_first_match(rn_acp_quirk_table);
+ if (dmi_id && !dmi_id->driver_data) {
+ dev_info(&pci->dev, "ACPI settings override using DMI (ACP mic is not present)");
+ ret = -ENODEV;
+ goto de_init;
+ }
+ }
+
+ adata->res = devm_kzalloc(&pci->dev,
+ sizeof(struct resource) * 2,
+ GFP_KERNEL);
+ if (!adata->res) {
+ ret = -ENOMEM;
+ goto de_init;
+ }
+
+ adata->res[0].name = "acp_pdm_iomem";
+ adata->res[0].flags = IORESOURCE_MEM;
+ adata->res[0].start = addr;
+ adata->res[0].end = addr + (ACP_REG_END - ACP_REG_START);
+ adata->res[1].name = "acp_pdm_irq";
+ adata->res[1].flags = IORESOURCE_IRQ;
+ adata->res[1].start = pci->irq;
+ adata->res[1].end = pci->irq;
+
+ memset(&pdevinfo, 0, sizeof(pdevinfo));
+ pdevinfo[0].name = "acp_rn_pdm_dma";
+ pdevinfo[0].id = 0;
+ pdevinfo[0].parent = &pci->dev;
+ pdevinfo[0].num_res = 2;
+ pdevinfo[0].res = adata->res;
+ pdevinfo[0].data = &irqflags;
+ pdevinfo[0].size_data = sizeof(irqflags);
+
+ pdevinfo[1].name = "dmic-codec";
+ pdevinfo[1].id = 0;
+ pdevinfo[1].parent = &pci->dev;
+ pdevinfo[2].name = "acp_pdm_mach";
+ pdevinfo[2].id = 0;
+ pdevinfo[2].parent = &pci->dev;
+ for (index = 0; index < ACP_DEVS; index++) {
+ adata->pdev[index] =
+ platform_device_register_full(&pdevinfo[index]);
+ if (IS_ERR(adata->pdev[index])) {
+ dev_err(&pci->dev, "cannot register %s device\n",
+ pdevinfo[index].name);
+ ret = PTR_ERR(adata->pdev[index]);
+ goto unregister_devs;
+ }
+ }
+ pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pci->dev);
+ pm_runtime_put_noidle(&pci->dev);
+ pm_runtime_allow(&pci->dev);
+ return 0;
+
+unregister_devs:
+ for (index = 0; index < ACP_DEVS; index++)
+ platform_device_unregister(adata->pdev[index]);
+de_init:
+ if (rn_acp_deinit(adata->acp_base))
+ dev_err(&pci->dev, "ACP de-init failed\n");
+disable_msi:
+ pci_disable_msi(pci);
+release_regions:
+ pci_release_regions(pci);
+disable_pci:
+ pci_disable_device(pci);
+
+ return ret;
+}
+
+static int snd_rn_acp_suspend(struct device *dev)
+{
+ int ret;
+ struct acp_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ ret = rn_acp_deinit(adata->acp_base);
+ if (ret)
+ dev_err(dev, "ACP de-init failed\n");
+ else
+ dev_dbg(dev, "ACP de-initialized\n");
+
+ return ret;
+}
+
+static int snd_rn_acp_resume(struct device *dev)
+{
+ int ret;
+ struct acp_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ ret = rn_acp_init(adata->acp_base);
+ if (ret) {
+ dev_err(dev, "ACP init failed\n");
+ return ret;
+ }
+ return 0;
+}
+
+static const struct dev_pm_ops rn_acp_pm = {
+ .runtime_suspend = snd_rn_acp_suspend,
+ .runtime_resume = snd_rn_acp_resume,
+ .suspend = snd_rn_acp_suspend,
+ .resume = snd_rn_acp_resume,
+ .restore = snd_rn_acp_resume,
+ .poweroff = snd_rn_acp_suspend,
+};
+
+static void snd_rn_acp_remove(struct pci_dev *pci)
+{
+ struct acp_dev_data *adata;
+ int ret, index;
+
+ adata = pci_get_drvdata(pci);
+ for (index = 0; index < ACP_DEVS; index++)
+ platform_device_unregister(adata->pdev[index]);
+ ret = rn_acp_deinit(adata->acp_base);
+ if (ret)
+ dev_err(&pci->dev, "ACP de-init failed\n");
+ pm_runtime_forbid(&pci->dev);
+ pm_runtime_get_noresume(&pci->dev);
+ pci_disable_msi(pci);
+ pci_release_regions(pci);
+ pci_disable_device(pci);
+}
+
+static const struct pci_device_id snd_rn_acp_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
+ .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
+ .class_mask = 0xffffff },
+ { 0, },
+};
+MODULE_DEVICE_TABLE(pci, snd_rn_acp_ids);
+
+static struct pci_driver rn_acp_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = snd_rn_acp_ids,
+ .probe = snd_rn_acp_probe,
+ .remove = snd_rn_acp_remove,
+ .driver = {
+ .pm = &rn_acp_pm,
+ }
+};
+
+module_pci_driver(rn_acp_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD ACP Renoir PCI driver");
+MODULE_LICENSE("GPL v2");